I guess this depends on what you mean by fact. If you're talking about its historical authenticity, then the answer to your question depends on which books of the Bible you're talking about.
Gensis, for the most part, seems to be mythical in nature, and cannot be considered as a reliable historical document.
Exodus, though seeming less mythical in construct, is nevertheless neither confirmed nor denied by archaeological or textual evidence. It also is not considered an accepted source of historicity.
Leviticus and Deuteronomy were not written as historical pieces, or narratives of any kind. They are documents that set forth both the Levitical Laws and the Deuteronomical Laws of the Hebrews.
Since the Exodus out of Egypt has very little backing archaeologically, the book of Numbers also warrants little historical merit as it concerns the years that the Hebrews lived in the desert before moving into the Levant.
The Book of Joshus is a highly controversial text, and is both supported and opposed by archaeological evidence, depending on the part of the text you are talking about. Due to this controversy, this book is not considered to be a very reliable history.
The first two books of the four books of Kings likewise do not have supportive evidence, physically or textually (except for a very minor post-contemporary text which refers to a "kingdom of David."), and so are not considered as reliable.
The final two books of Kings, however, DO have very much textual and archaeological support, and are considered to be good sources of the ancient history of the Levant and parts of the Near East.
Likewise can be said of the book of Daniel, though not entirely accurate in some areas.
The Old Testament portion of the Bible consists very much of Wisdom Literature, Songs, Hymns and Poetry and Prophetic Literature. We cannot place historical values to these books as they were not written as histories, and never intended to be read as such. If anything, these books merely help us to understand the ancient culture of the Hebrews. In this sense, they might be considered "factual."
Concerning those books that I have not mentioned that do purport to histories, it is likely that they are also accepted sources for ancient Near Eastern histories, as it has been a clear trend that the further back in time you go, the less accurate the histories. Since the books I have not mentioned come later than the Pentateuch and Kings, etc.. they are hence more reliable sources, and an abundance of extra-biblical evidence (both physical and textual) support them. Keep in mind, however, that since histories are always written with bias, the stories told in these other books aer not always necessarily fully accurate, though the major events themselves are confirmed to have taken place.
The New Testament is another story altogether, and I don't believe I am yet qualified to make a proper statement concerning its historical authenticity.
The Bible, therefore, is very much a blend between fact and fiction, and actually, intentionally so. However, not as a means of controlling the masses, as some would suggest, but rather as a means of conveying spiritual concepts and ideologies. The historical "factual-ness" of the Bible actually has little impact on the heart of the religious ideals that come from it.